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Seedless Plants

Seedless Plants. Chapter 9 Section 2. Nonvascular Plants. Very small plants that have rhizoids rather than ROOTS. Nonvascular plants. Water is absorbed and distributed directly through cell membranes and CELL WALLS. Grow in DAMP environments Reproduce by SPORES rather than seeds.

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Seedless Plants

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  1. Seedless Plants Chapter 9 Section 2

  2. Nonvascular Plants • Very small plants that have rhizoids rather than ROOTS.

  3. Nonvascular plants • Water is absorbed and distributed directly through cell membranes and CELL WALLS. • Grow in DAMP environments • Reproduce by SPORES rather than seeds

  4. Examples • Mosses – green, leaflike growths arranged around a central stalk • Liverworts – flattened, leaflike bodies • Hornworts – have only one choloroplast in each of their cells

  5. Mosses

  6. Liverworts

  7. Hornworts

  8. Nonvascular Plants • Frequently pioneer species – organisms that are the first to grow in new or disturbed areas and which change ENVIRONMENT conditions

  9. Seedless Vascular Plants • Reproduce by spores, but have VASCULAR tissue that carries water and nutrients throughout the plants

  10. Seedless Vascular Plants • Can grow BIGGER and THICKER than nonvascular plants • FERNS – largest group of seedless vascular plants

  11. Ferns • Have stems, leaves, and ROOTS • LEAVES are called fronds • Reproduce by SPORES found on the back of their fronds

  12. Club Mosses • Needlike leaves

  13. Horsetails • Jointed stem with a HOLLOW center

  14. Importance of seedless plants • Fuel – decaying seedless plants are compressed into peat and eventually COAL. • Soil conditioners • FERNS can be used for weaving material and basketry

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